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Trustindex verifies that the company has a review score above 4.5, based on reviews collected on Google over the past 12 months, qualifying it to receive the Top Rated Certificate.

Top Rated TANKLESS Water Heater Repair

Expert Tankless Water Heater Repair

Proudly Serving Kitchener-Waterloo, Cambridge, Guelph & All Neighboring Communities

Able Air Conditioning & Heating is your local expert for tankless water heater repair. These on-demand systems are complex, and our technicians are specifically trained to diagnose and fix them—whether you’re dealing with sudden cold water, annoying temperature fluctuations, or a unit flashing a frustrating error code.

We know that going without hot water is a massive headache for any household. You can count on our team to show up fast, provide an honest assessment, and get your system running reliably again so you don’t have to settle for cold showers. Give us a call or book your service appointment with us today!

One Coupon Valid Per Customer

Protect Your Tankless Water Heater With Able Air’s Maintenance and Protection Plans

Protect your tankless water heater system and your wallet with Able Air’s Maintenance and Protection Plans! Our plans offer annual tune-ups, keep your manufacturer’s warranty active, and cover service fees for diagnostics and warranty claims. Upgrade to our Protection & Maintenance Plan for even more coverage, including electrical calls and up to $1,500 in parts and labor annually.

The Importance of Timely Tankless Water Heater Repair

Timely tankless water heater repair is essential to maintaining your system’s efficiency and performance. Ignoring issues can lead to reduced hot water flow, disrupting your daily routine. At Able Air Conditioning & Heating, we prioritize quick repairs to prevent discomfort for our Kitchener customers.

Enhanced Efficiency

Our repair services optimize your tankless water heater’s efficiency, cutting energy waste and lowering utility bills.

Improved Performance

Our expert technicians resolve underlying issues, restoring consistent hot water and reliable performance.

Preventative Maintenance

We offer maintenance plans that help prevent future issues, saving you time and money.

Exceptional Customer Support

Our team provides personalized support, guiding you through the repair process and addressing any concerns.

Troubleshooting Your Tankless Water Heater

Tankless water heaters are efficient and reliable alternatives to conventional storage tank models. However, like all HVAC systems, they can experience occasional breakdowns. Before calling for service, try troubleshooting these common issues:

Lack of Hot Water

If you’re not getting hot water, the burners might not be igniting properly. Possible causes include:

  • Electrical issues
  • Insufficient gas flow
  • Damaged sensors
  • Dirt or dust buildup

Check the circuit breaker and pilot light to determine if the problem is electrical or gas-related. If the water heater is tripping the circuit, it’s time to call a professional.

Fluctuating Water Temperatures

Inconsistent water temperature can be caused by:

  • Incorrect thermostat settings
  • Water pressure fluctuations due to plumbing issues
  • Dirt, debris, or mineral buildup restricting water flow
  • Leaks in your pipes

If adjusting the thermostat doesn’t solve the problem, inspect your plumbing for potential issues.

Tankless Troubles? Able Air Fixes It All!

Detecting and Fixing Leaks

We use advanced methods to find and quickly repair leaks, protecting your home from water damage and keeping your system running efficiently.

Faulty Igniter Replacement

Our technicians can replace broken igniters so your tankless heater can reliably produce hot water again.

Solving Temperature Swings

We fix issues causing inconsistent temperatures, ensuring you have a steady supply of hot water throughout your home.

Removing Mineral Scale

Our descaling service eliminates mineral buildup, boosting efficiency and extending your system’s life.

24/7 Emergency Repairs

We’re available around the clock to handle urgent issues and quickly get your hot water back on.

Why Choose Able Air Conditioning & Heating for Tankless Water Heater Repair?

5-Star Google Rating

24/7 Emergency Service

Flexible Financing Options

Equipment Protection Plans

Highly Trained Technicians

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Able Air Conditioning & Heating
Able Air Conditioning & Heating
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1674 Google reviews
Nilesh Datta profile picture
Nilesh D
0 days ago
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Great maintenance service done by Phil
Hollie Sloan profile picture
Hollie S
0 days ago
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This is the best company to work with, from a simple service call after hours to discovering I needed a new furnace, to having a consultation about all the products that would work and why they are the best for my house, to setting up and asking questions to the wonderful ladies in the office, to a clean and friendly install, Able Air and Heating is the place to go!! Shawn and Jamie did an amazing job installing and showing me everything and helped to set up my new thermostat as well. I couldn’t be more happier with spending my money here, especially to a local company!!! Thank you all!!!!
susanne chan profile picture
Susanne C
1 days ago
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The Technician was very professional and courteous. He even wore a mask because one member in our household is immunocompromised. We also liked that we were kept up to date on when the technician could be expected!
Melanie Hanam profile picture
Melanie H
1 days ago
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Excellent professional service from Technician Phil who expertly installed a furnace humidifier for us. He even took the time to change our furnace filter for us! Also, our thanks to Chris who tirelessly researched for an appropriate unit for us to fit in a very tight space. Thank you gentlemen for your exceptional service! 5 star for communication, knowledge, cleanliness and affordability.
Rob K profile picture
Rob K
2 days ago
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My whole experience in replacing my old furnace and A/C was great! Phil did a great job diagnosing my problems and gave great advice on going forward, Mike did a great job explaining my options and helping me chose the equipment that meets my needs and Martin and Steve spent a long day installing the new equipment, they did an amazing job! Thank you Able air conditioning and heating for the great job!
Brendan Beattie profile picture
Brendan B
2 days ago
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Andre cleaned my heat pump after buying a house last year. I was unaware of the age and maintenance of the unit and he gave all recommended maintenance needed. Thanks!
Kate Byun profile picture
Kate B
2 days ago
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I had a new furnace installed today, and the two technicians, Shahin and Jaime, were wonderful. They were kind, professional, and worked efficiently from start to finish. They also made sure to keep the workspace clean and left everything spotless when they were done. Great customer service and quality work
Ankica Cvjetic Orec profile picture
Ankica C
3 days ago
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Shahin and Jaime installed my new heat pump. They were extremely professional and knowledgeable, and they left everything so clean! Highly recommended!
Judith Lodi profile picture
Judith L
6 days ago
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Within a week of discovering that my A/C was leaking fluid, Able Air had replaced coils and installed my new unit. Mike came to discuss repairs versus replacement. The reason that so many people have given Able Air a 5 star rating was underscored for me when Mike said, "in good conscience I can't charge for servicing a unit that will be replaced." Crediting a service call on my old A/C might be minor compared to replacement costs, but sometimes small things go a long way to instill confidence in the varsity of a company and its owner. So also can those a company employs and Able Air has chosen it's staff well. The service tech, André, and the installation team of Martin and Steve were knowledgable, efficient, timely and personable. The office staff kept me well appraised of appointment times and payment options were seamless. The cost of the new unit was comparable if not better than the competition. I would, with confidence, recommend Able Air for your next furnace, A/C or servicing requirements.
Smiley 4Ever profile picture
Smiley 4
7 days ago
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Oct 1/26 Great yearly service of my Furnace and AC unit by Phil the tech. Very professional and respectful of my property. Feb 11/26 5*...Andre (with the beautiful eyes) came today to give me a peace of mind about the furnace room and it's temperature. He checked both the furnace from the inside and the combustion system from the outside to ensure that they were all in working order. Oct 28/25 5* AC/Furnace/Gas FP checkup by Josh. Excellent service provided. Josh was very thorough and professional in checking all 3 of my products. Oct/21 5* After getting 3 other quotes, I met Cyrus the owner. He was very professional and down to earth to answer questions honestly. He stood behind his word and his workmanship. He came to our home twice to ensure that we were 💯% confident in our decision for both AC and furnace installation. He arranged for the duct cleaning at a lower cost to ensure everything was clean before new equipment install. The crew (Waheed,Frank, Winston) came on time and were very professional and polite. They ensured that no dirt was dragged in from the outside by protecting our carpets. They protected our safety and wore masks and kept their distance during their install. I highly recommend this local company.